Part 38

R radicosum, Lophophyllidium: 53 Radiolaria: 47 radiolarians: 47, 49 Rancho La Brea tar pit: 5 rays: 87 Reagan County: 42 Receptaculites: 50 Renaissance: 3 Reptilia: 89-100 reptiles: 89-100 rhamphorhynchoids: 91 Rhamphorhynchus: 91, 94 rhinoceroses: 7, 104, 106, 107 woolly: 106, 107 Rhipodomella: 55 Rhombopora: 51, 55 Rice University: 27 Rio Grande valley, of Trans-Pecos: 35, 95 road metal: 19 Robulus: 49 Rock and Mineral Clubs: 23 rock units: 34 rockymontanus, Spirifer: 58 Rodda, Peter U.: 1 rudistids: 26, 27, 28, 29, 30 Rugosa: 51

S saber-tooth cat: 102, 103 St. Mary’s University: 27 salamanders: 89 Salenia: 85 San Angelo College: 27 San Antonio College: 27 sand dollars: 82 sapiens, Homo: 22 Sarcodina: 47 Saurischia: 97 saurischians: 90, 97, 99 Sauropoda: 97 sauropods: 90, 97, 98 scale trees: 46, 47 scallops: 56, 59 Scaphopoda: 56 scaphopods: 26, 27, 28, 29, 56 Schizodus: 67 scientific names: 21-23 Scleractinia: 51 sclerites, holothurian: 83, 84 scolecodont: 78 scouring rushes: 47, 48 Scyphozoa: 49, 84 sea anemones: 49 sea cucumbers: 82 “sea lily”: 81, 82 “sea mats”: 51, 54 “sea-mice”: 56 sea urchins: 82 sedimentary rocks: 5, 19 sellaeformis, Ostrea: 72 septa, cephalopods: 66, 75 corals: 49, 51 serpent stars: 82 Serpula: 78 Seymouria: 92 sharks: 87 teeth: 10, 87, 88 sheep: 106 shrimp: 78 Siberia: 7, 106 Sigillaria: 46 signata, Avonia: 12, 13 silica: 10, 11 silicification: 11 Silurian— derivation and pronunciation: 34 fossils: 40 cystoid: 81 of El Paso and Van Horn regions: 40 skates: 87 slickensides: 16 slugs: 56 Smith, Fred: 1 snails: 11, 56, 59. See also gastropods. snakes: 89 Solitario uplift: 40 Somervell County: 14, 15 South America: 87, 102 Southern Methodist University: 27 South Texas College: 27 Southwestern University: 27 species: 22 spicules, sponge: 49, 50 spiders: 78 spines, echinoid: 84, 85 Spirifer rockymontanus: 58 Spirorbis: 78 sponges: 10, 27, 30, 49, 50 spores: 47 Squamularia: 57 squid: 66, 78 starfish: 82, 83 Stegosaurus: 90, 97, 99 stegosaurs: 90, 97, 99 steinkern: 59, 62 stems, crinoid: 26, 28, 41, 81, 82, 83 Stephen F. Austin State College: 27 “stomach stones”: 14 stone, building: 19 Strabo: 3 Straparolus: 61 Strecker Museum: 95 Striatopora: 51, 52 Strobeus: 62 Styracosaurus: 90 subhorrida, Avonia: 12, 13 subtilita, Composita: 57 Sul Ross State College: 27 Surcula: 64 sutures, cephalopod: 66, 75, 78 nautiloid: 75 swine, giant: 106 Sycostoma: 64 symmetry: 23 bilateral: 24, 26, 29 radial: 24, 26, 28, 80

T tabulae: 51 Tabulata: 51 tape, masking: 19 tapirs: 104 tar: 5 Tarleton State College: 27 Tarrant County: 11 taxonomy: 21-22 teeth, horse: 104 mammoth: 104 shark: 10, 87, 88 Tellina: 73 Tertiary— derivation and pronunciation: 34 fossils: 43 corals: 53 gastropods: 59, 63, 64 mammals: 100-107, 103, 105 microfossils: 32 pelecypods: 72, 73, 74 radiolarians: 49 rocks of Gulf Coastal Plain, High Plains, North-Central Plains, and Trans-Pecos region: 42 Tetracoralla: 51 Tetrapoda: 86, 89-107 texana, Exogyra: 70 Texanites: 77 Texas A. & M. College: 1, 27 Texas Christian University: 27 Texas College: 27 Texas College of Arts and Industries: 27 Texas Highway Department: 17 Texas Memorial Museum: 14, 87, 95, 97, 100, 102 Texas Technological College: 27 Texas, the geology of: 34, 37-43 Texas Western College: 27 Thallophyta: 43, 46 Theophrastus: 3 Therapsids: 89 Theria: 100 therians: 100-107 artiodactyls: 101, 106 carnivores: 102, 103 dinocerates: 102, 105 edentates: 100, 101, 102 pantodonts: 102 perissodactyls: 104 proboscideans: 102, 104, 107 Theropoda: 97 theropods: 90, 97, 98 The University of Texas: 1, 2, 27 time, geologic: 34 titanotheres: 104, 105, 106 toads: 89 tortoises: 89 traces of organisms: 14 burrows: 14 coprolites: 14 gastroliths: 14 tracks: 14, 15 trails: 14 Tracheophyta: 44, 46, 48 Trachodon: 90, 97, 99 tracks, dinosaur: 14, 15, 97 Trans-Pecos region: 35, 36, 40, 42, 43, 86, 95, 102, 106 tree sloths: 100, 102 trees, coniferous: 7 Trepospira: 61 Triassic— derivation and pronunciation: 34 fossils: 42 dinosaurs: 95 phytosaurs: 91, 94, 95 of Crockett, Glasscock, Pecos, Reagan, and Upton counties; Glass Mountains and High Plains: 42 Triceratops: 90, 99, 100 Trigonia: 69 Trilobita: 78 trilobites: 78, 80 morphology: 80 Trilobitomorpha: 78 Trinacromerum: 91 Trinity University: 27 trivial name: 21-22 Trochosmilia: 53 Tuba: 64 tuberculatus, Aulosteges: 12, 13 Turrilites: 77 worthensis: 22 Turritella: 62, 63 turtles: 89, 91 tusk-shells: 56 Tyler Junior College: 27 Tylosaurus: 91, 93 Tylostoma: 62 Tyrannosaurus: 90, 97

U uintatheres: 102, 105 Uintatherium: 102, 105 umbilicus: 59, 60 United States Geological Survey: 19 United States National Museum: 2, 12 University of Corpus Christi: 27 University of Houston: 1, 27 University of Texas, The: 1, 2, 27 Upper Cretaceous: 34, 42, 78. See also Gulf. Upton County: 42

V valves, brachiopod: 54, 56 pelecypod: 59, 65, 66 Van Horn uplift: 35, 36, 40, 41 Venericardia: 73 bulla: 72 ventral valve, brachiopod: 54 Venus mercenaria: 22 Vertagus: 63 Vertebrata: 84, 86-107 vertebrates: 86-107 amphibians: 89, 92 birds: 100 fish: 87, 88, 89 mammals: 100-107 reptiles: 89-100 Vokesula: 73 volcanic ash: 5 Volutolithes: 64

W Waco: 91, 92, 95 wacoensis, Kingena: 56 Washington, D. C.: 19 washitaensis, Gryphaea: 69 Weches formation: 43 West Texas State College: 1, 27 Wilson, John A.: 2 Wilson, Sarah Louise: 2 Wise County: 20 wood, petrified: 19 Woodbine: 10, 37, 47 worms, annelid, fossil, segmented: 78 worm tubes, Cretaceous: 9 Worthenia: 61 worthensis, Turrilites: 22

Y Yoldia: 67 Young County: 20 Young, Keith: 1

Z Zoantharia: 51 zooecia: 51

Transcriber’s Notes

--Retained publication information from the printed edition: this eBook is public-domain in the country of publication.

--Corrected a few palpable typos.

--Included a transcription of the text within some images.

--In the text versions only, text in italics is delimited by underscores.